End underframe weldment for railway cars of the passenger train type



July 21, 1953 A. G. DEAN 2,646,009

END UNDERFRAME WELDMENT FOR RAILWAY CARS OF THE PASSENGER TRAIN TYPEFiled Jan. 12, 1950 4 Sheets-Sheet 1 INVENTOR. 5Q [barf 1. Dean,

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----------- "if ATTORNEY July 21, 1953 A. a. DEAN END UNDERFRAMEWELDMENT FOR RAILWAY CARS OF THE PASSENGER TRAIN TYPE 4 Sheets-Sheet 2Filed Jan. 12 1950 H km N 0 Dn T. G 0 N6 T M .m mWQ Y. 8 U d 4Sheets-Sheet 5 DEAN ATTORNEY INVENTOR. y llberf C1. Deam CARS OF THEPASSENGER TRAIN TYPE END UNDERFRAME WELDMENT FOR RAILWAY July 21, 1953Filed Jan. 12 1950 a a a a e 0 m July 21, 1953 A. G. DEAN END UNDERFRAMEWELDMENT FOR RAILWAY CARS OF THE PASSENGER TRAIN TYPE Filed Jan. 12 1950INVENTOR. $4Lberc CT. Depm BY ATTORNEY Patented July 21, 1953 reneworries END UNDERFRAME.WELDMENT FOR RAIL- WAY CARS TYPE OF THE PASSENGERTRAIN Albert G. Dean, Narberth, Pa, assignor to The Budd Company, Philtion of Pennsylvania adelphia, Pa., a corpora- I Application January 12,1950, Serial No. 138,140

4 Claims.

The invention relates to an end underframe weldment for railway cars ofthe passenger train type and to a coupler carrier forming part of suchframe. More specifically, the invention relates to the indicated kind ofend underframe which represents practically throughout a fabricatedfusion-welded, preferably arc-welded, plate metal construction.

The new construction is distinguished from prior constructions of thesame general kind by the simple and easily manufactured form of itscomponent parts, by the arrangement of the welding seams permittingconvenient and economical assembly, and by its favorable strength toweight ratio.

The features by which the above and other advantages are achieved, willbecome apparent from the following description of the embodiment of theinvention which is shown in the attached drawing.

In the drawing: 7 Figure 1 is a fragmentary plan view of the vestibuleend of the under-body of a passenger railway car, including the new endunderframe weldment, and showing adjoining parts of side walls and endwall partly in section;

Figure 2 is belowand above the center line a plan view and a horizontalsection along line 2-2 of Figure 4, respectively, of the end underframeweldment and of the adjoining portion of thernain center sill;

, Figure 3 is a section along line 3-3 of Figure l of the underbodyshowing the center sill structure in side elevation;

V Figure 4 is a vertical longitudinal section through the under-body,the section being taken along the center line 4-4 of Figure l;

Figure 5 is an end elevation of the end sill and-coupler carrier of theend underframe shown in Figure 3;

Figure 6 is a fragmentary section through the end sill, along line 96 ofFigure 1;

Figures 7 through 12 are local sections through V through the connectionbetween the center sill of the end underframe and the adjoining maincenter sill; V V Figure 15 is a section along line i5-i5 of Figures land 14; a

. ,2 Figure 16 is on the left an end elevation of one-half of thebolster beam-and on the right a section through the bolster beam, theelevation being viewed from and the section being taken along line I6! 6of Figure 2;

Figure 17 is a fragmentary section along line ll|1 of Figure 1 throughthe bolster beam and a fragmentary inside elevation of the underframeside sills and the body side wall; and

Figure 18 is a fragmentary section along line and the other arm or armsconstitute transverse, upwardly projecting reinforcing webs. Thelateralmargins of floor panel 22, are connected each with a side sill 25(Figures 1, 1'7 and 18), and the ,panel is reinforced by hat-sectionstringers -26 (Figural). The side walls comprise bottom sills 21,secured to the sills 25, and hat-section posts 28. The general featuresdescribed briefiy to this point are similar to the features disclosed inco-pending applications,

such as application Serial No. 588,866 Underframe for VehiclesEspecially Railway Cars, of Walter B. Dean, filed April 17, 1945, now U.S. Patent No. 2,504,113, application Serial No. 588,760 End UnderframeConstruction for Vehicles Especially Railway Cars, of applicant andWalter B. Dean, filed April 17, 1945, now U. S. Patent No. 2,504-,112and application Serial No.

782,001 End Underframe for Railway Cars, of applicant, filed October 24,1947, now US. Patent No. 2,589,996. v

The end underframe ,weldment 29 comprises a center sill structure 29, anend sill member 38 and a bolster beam 3|. sects center sill 29 at ashort distance from the inboard end thereof.

Sill structure 29 is composed mainly of two Z-sections, each having avertical web 32, an outwardly directed bottom arm 33 and an in- .wardlydirectedtop arm 34, and each extending from coupler carrier 35 to plane38 inboard of bolster beam 31 (Figure 2). Bottom arms 33 extendfromcoupler carrier 35 (Figures 2 and 3) to the outboard side of bolsterbeam 3 I 1 (Figures 2 and 14), and the upper arms 34 extend from Themain Bolster beam 3| interplane 36 to the inboard side of end sill 30(Figures i, T and 8). The upper and lower arms 33, 34 have approximatelyconstant width over their entire lengths and are each arranged in oneplane, and webs 32 have in side elevation straight upper and lower edgesdiverging from bolster beam 3| in outboard direction. This straightedged formation facilitates the manufacture of the Z- sections.

ll'he plan view configuration of the Z-sections is as follows: At andadjoining their intersection with bolster beam 3i, webs 32 run parallelto each other and the upper arms 34 meet and are welded together(Figures 2, l3 and 15). From bolster beam 31 to a transverse bulkhead 31interconnecting the Webs 32, webs 32 with their arms 33, 34 diverge inoutboard direction, then again run parallel to each other to plane 38(Figure 2) whence webs 32 and bottom arms 33 change their directionsabruptly and diverge from each other to their outer ends at couplercarrier 35.

The upper and lower margins of webs 32 are interconnected by top andbottom plates 39, ll from the region of bulkhead 31 to points nearbolster beam 31 (Figures 2, 4, 10, 11 and 12). Bulkhead 31 is reinforcedby a channel section member 41 and forms the inner stop for draft gear 2located in the pocket between webs 32. Brackets or plates 43 welded tothe webs 32 form the forward stops for the draft gear as well as draftgear guides. Further brackets M welded to webs 32 and bulkhead 3'! formupper hOIi-v zontal guides for the draft gear (Figures 2, 4, 9 and 10);Removable plate G (Figure 4) closes the draft gear pocket. The detailsof the draft gear and its arrangement in the end underframe are notillustrated and described in detail; they form the subject matter ofapplicant's copending application Serial No. 130,161, Draft GearArrangement, filed November 30, 1949, now abandoned.

End sill 3!) (Figures 2, 3, 4, 6 and 8) is a closed box formed ofstraight-sided angle sections 46, ill and end plates 48, which membersare arcwelded together along their margins. Section #3 forms the outerand bottom wall, and section 41 forms the top and inner wall of sill 30.End walls iii are provided with upwardly projecting horns 19 serving forthe attachment of the collision posts 55. The collision posts 50 formparts of the end wall which also comprises the sheet metal lateral endsill portions 5!, corner Posts 52 and outer panel 53 (Figure 1). Endsill 30 is interiorly reinforced by longitudinal vertical webs 54 and bytubes or sleeves 55 extending through and secured in openings of itsvertical walls. The tubes house buffer rods and springs 55 (Figure 8).

The bottom wall of end sill 3i! is extended in inboard direction beyondits inner wall. The upper portions of webs 32 are recessed and top arms34 are cut off for the accommodation of sill 3i! and they end at theinner wall of sill 30 to which they are welded. An inverted U-sectionbrace 51 is welded by its side walls to the upper arms 35, along itsfront margins to the inner wall of sill 35, and by the end margin of itstop wall to top plate 38. The depth of the U-section decreases from theend sill in inboard direction (Figures 3, 4, 5, 7, 9 and and a floorboard support 58 is welded to the top of member 51 (Figures 4, 9 and10). V

Coupler carrier 35 is welded to the underside of end sill 3c and to theend margins of webs 32 and lower arms 33. This carrier is cut from ametal plate and remains in its fiat state, thereby greatly facilitatingand cheapening its manufacture and installation. The lower margin ofplate 35 is connected by welding with the lower horizontal arm of atransversely extending angle section 59. The second arm of section 59extends upwardly and is spaced from plate 35. Longitudinally extending,vertical gusset plates 55 are welded to the ends of angle section 59, tothe inner surface of plate 35 and to the edges between webs'32 and lowerarms 33 of the center sill structure. They project in inboard directionbeyond section 59 (Figures 3, 4 and 7).

All members entering into the construction of the end sill, thecollision post supports, the coupler carrier and the adjoinin portion ofthe center sill structure are of very simple configura tion. They can bemanufactured easily and cheaply because they are straight-sided so thatthey require either no forming at all or can be formed simply by bendingon power brakes. The straight-sided formation also greatly facilitatesand cheapens the assembly of the parts throughout by fusion, such asarc-welding. The weld seams are relatively few and short. Thissimplicity in construction and manufacture is achieved without sacrificein the strength necessary for withstanding the severe strains to whichstructures of this, type are subjected.

Bolster beams 35 is an I-section having a vertical web 5!, a bottomchord 52 and a topchord 63. Chord 63 extends horizontally and is securedby down-turned marginal flanges to the webs of floor panel 22 byplug-welding (Figures 14 and 15). Both chords 52 and 53 extenduninterruptedly over the entire width of the underframe (Figures 13 and16). Bottom chord 62 slopes downwardly from its ends toward the centerof the car.

Web 51 of the bolster consists of two halves, one on each side of thecenter sill portion, which are welded to the webs 32 of the center sill.Plates or gussets fi l aligned with webs 32 are welded to the uppermargins thereof, to the upper portion of web 6i and to top chord 63(Figures 13, 14 and 16). The gap between the two halves of bolster web6i is bridged by gusset plates 55, 66 inserted between and welded to thewebs and upper arms 32, 34 of the center sill, to gusset plates 64 andto chords 62, 63 (Figures 2, 4, l3 and 16).

Bottom chord 62 is welded to the recessed lower margins of center sillwebs 32 and to the end margins of center sill arms 33. On the inboardside of bolster beam 3!, the webs 32 have their lower margin sharplynotched at 61 (Figure 14). The outboard margin of this notch is weldedto the outboard end of hat-section 68 which has horizontal flanges 69and tapers in depth in inboard direction (Figures 14 and 15). Flanges 69extend in outboard direction beyond the U- section portion of member 68and have their extensions welded to webs 32 and 61 of center sill andbolster beam. Flanges 69 are spaced from the lower margins of the centersill webs 32 extending beyond the bolster beam for the insertion of theoutwardly projecting wall portions along the lower margins of maincenter sill 2| (Figures 14 and 15). The projecting portions of webs 32fit between the side walls 23 of the main center sill and are secured inthe region of overlap to them by plug welds 10. Further plug welds H!connect the outwardly projecting portions along the lower margins ofmain center sill 2| to the flanges 69 of member 68.

Secured to the underside of bottom chord 62 p the stresses from centerplate into the adjoining main center sill 2| without stressconcentrations and without abrupt change in direction.

The outer margins of web 6| and chords 62, 63 of the bolster beam areeach welded to a longitudinally extending vertical plate 14, and aboxsection structure is welded'to the outside of plate 14. Structure 15nests in the channel section portion of side sill 25. Plate 14 servesfor the securement of bottom sills 21 and post 28, of the side walls(Figures 1, 2, 16, 17 and 18). Web 6| and chords 62, 63 of bolster beam3| are interbraced by gussets 16 at the location of the side bearings Tl(Figures 2 and 16).

The invention is not restricted to the details of the illustrated anddescribed embodiment but is susceptible to modifications and adaptationswhich will occur to those skilled in the art.

I claim:

1. In an end underframe for railway cars of the passenger train type, incombination: a closed box section end sill having two angle sectionplates facing towards each other and fusion welded together along theirmargins, the one section forming the top wall and the one upright walland the other section forming the bottom wall and the other upright wallof the sill; a center sill between said end sill and the location of abolster beam; said center sill comprising a pair of Z-sections withvertical webs and top and bottom flanges, said webs having straighttaper in side elevation from bolster beam to end sill; a coupler carriercomprising a flat plate welded by its top margin to said end sill; anangle section reinforcement welded'to the bottom margin of said couplercarrier; the vertical webs of said Z-seotions being welded to thecoupler carrier and forming a part thereof; and gussets interconnectingthe bottom flanges of the Z-sections and the coupler carrier.

2. End underframe for passenger train railway cars, presentingpractically throughout a fusion,

such as are welded plate metal construction and comprising incombination: a closed box-section beam about parallel to each other; adraft gear pocket formed by said webs and a member interconnecting them;a coupler carrier consisting of a flat plate welded by its top margin tosaid end sill; an angle section reinforcement welded to the bottommargin of said coupler carrier; the

vertical Webs of the center sill being welded to the coupler carrier andforming part thereof.

3. End underframe for passenger train railway cars, presentingpractically throughout a fusion welded plate metal structure, saidstructure comprising in combination: a closed box section end sillhaving two angle sectionplates facing towards each other and weldedtogether along their margins, the one section forming the top and innerwall and the other section the bottom and outer wall of the sill; anI-section bolster beam welded together of a vertical web and horizontaltop and bottom chords; a center sill between said end sill and a pointinboard of said bolster beam; said center sill comprising a pair ofz-sections with vertical webs and top and bottom flanges, said webshaving straight taper in side elevation from bolster beam to end sill;saidZ-sections having the following portions following each other fromthe end sill toward their inboard ends: portions-converging toward eachother in inboard directions, parallel portions transversely spaced fromeach other to form a draft gear pocket, portions converging toward eachother in inboard direction so that their top flanges meet near theoutboard side of said bolster beam, and portions running parallel toeach other and connected by their top flanges; a coupler carrierconsisting of a flat plate welded by its top margin to said end sill;the vertical webs of said Z-sections being welded to said couplercarrier and forming part thereof.

4. In an end underframe for passenger type railway cars: a closed boxsection end sill having two angle section plates facing towards eachother and fusion welded together along their margins'the one sectionforming the top and inner wall and the other section the bottom andouter wall of the sill; an I-section bolster beam having a vertical weband top and bottom chords; a center sill adjoining said end sill andintersecting said bolster beam; said center sill comprising a pair ofZ-sections with vertical webs and top and bottom arms; said bottom armsending at the outboard margin of said bottom chord of said bolster beam;a U-section member connected with the inboard margin of said bottomchord and diminishing in depth in inboard direction; a center plateweldment welded to said bottom chord and the adjoining portions of saidbottom arms and said U-section member; plates closing the ends of thebox section end sill and provided with upward extensions for theattachment of collision posts; and a coupler carrier welded by its topmargin to said end sill.

- ALBERT G. DEAN.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,080,024 Stevens et al Dec. 2, 1913 1,208,381 Wrigley Dec.19,1916 1,881,795 Martin Oct. 11, 1932 2,244,518 Dietrickson June 3,1941 2,352,718 Kassler July 4, 1944- FOREIGN PATENTS Number Country Date22,107 Great Britain Aug. 16, 1906 of 1905

